npr's steve inskeep explains. >> for many evangelicals, a historical adam and eve is a critical part of their theology, but now some conservative religious scholars are saying publically that they can no longer believe it. >> stephen: no adam and eve? no apple? no tasteful leaf thongs? and all because these so-called conservative scientists say "there is no way we can be traced back to a single couple...given the genetic variation of people today." oh, the genetic variation needs more than two people? fine, they had a freaky three-way with the snake. [laughter] that would explain the genetic variation of james carville. [laughter] [cheers and applause] so i'm issuing a wag of my finger at evangelicalç scientists. real christians like president of southern baptist theological seminary albert mohler, know what's at stake here. >> when adam sinned, he sinned for us and it's that very sinfulness that sets up our understanding of our need for a savior. without adam, the work of christ makes no sense whatsoever. >> stephen: exactly. without one, the other can't exist. it's like how witho